[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   19.663193] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.222954] random: sshd: uninitialized urandom read (32 bytes read)
[   23.556799] random: sshd: uninitialized urandom read (32 bytes read)
[   24.463207] random: sshd: uninitialized urandom read (32 bytes read)
[   24.613611] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts.
[   30.165500] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/19 10:02:21 parsed 1 programs
[   32.029710] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/19 10:02:23 executed programs: 0
[   33.325782] IPVS: ftp: loaded support on port[0] = 21
[   33.443992] WARNING: CPU: 1 PID: 4555 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0
[   33.452473] Kernel panic - not syncing: panic_on_warn set ...
[   33.452473] 
[   33.459873] CPU: 1 PID: 4555 Comm: syz-executor0 Not tainted 4.18.0-rc5+ #56
[   33.467060] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.476420] Call Trace:
[   33.479017]  dump_stack+0x1c9/0x2b4
[   33.482642]  ? dump_stack_print_info.cold.2+0x52/0x52
[   33.487830]  panic+0x238/0x4e7
[   33.491018]  ? add_taint.cold.5+0x16/0x16
[   33.495166]  ? __warn.cold.8+0x148/0x1ba
[   33.499220]  ? __warn.cold.8+0x117/0x1ba
[   33.503271]  ? smc_unhash_sk+0x357/0x4b0
[   33.507320]  __warn.cold.8+0x163/0x1ba
[   33.511202]  ? smc_unhash_sk+0x357/0x4b0
[   33.515248]  report_bug+0x252/0x2d0
[   33.518869]  do_error_trap+0x1fc/0x4d0
[   33.522741]  ? graph_lock+0x170/0x170
[   33.526528]  ? math_error+0x3e0/0x3e0
[   33.530319]  ? lock_acquire+0x1e4/0x540
[   33.534282]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.539116]  do_invalid_op+0x1b/0x20
[   33.542822]  invalid_op+0x14/0x20
[   33.546287] RIP: 0010:smc_unhash_sk+0x357/0x4b0
[   33.551106] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 88 00 00 00 48 81 c4 c0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c9 52 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 b3 31 58 fa 
[   33.570296] RSP: 0018:ffff8801d909f9f8 EFLAGS: 00010293
[   33.575647] RAX: ffff8801d8c1e740 RBX: ffff8801d8d2f0c0 RCX: ffffffff8761b7f6
[   33.582900] RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005
[   33.590154] RBP: ffff8801d909fae0 R08: ffff8801d8c1e740 R09: ffffed003b1a5e28
[   33.597410] R10: ffffed003b1a5e28 R11: ffff8801d8d2f143 R12: 1ffff1003b213f43
[   33.604665] R13: ffff8801d909fab8 R14: ffffffff89937480 R15: ffff8801d8d2f140
[   33.611946]  ? smc_unhash_sk+0x296/0x4b0
[   33.616004]  ? smc_unhash_sk+0x357/0x4b0
[   33.620072]  ? smc_unhash_sk+0x357/0x4b0
[   33.624133]  ? smc_rx_data_available+0x120/0x120
[   33.628886]  ? release_sock+0x1ec/0x2c0
[   33.632873]  ? __local_bh_enable_ip+0x161/0x230
[   33.637531]  ? __release_sock+0x3a0/0x3a0
[   33.641687]  ? smc_release+0x2c9/0x670
[   33.645575]  ? trace_hardirqs_on+0xd/0x10
[   33.649739]  ? __local_bh_enable_ip+0x161/0x230
[   33.654444]  smc_release+0x3cf/0x670
[   33.658185]  __sock_release+0xd7/0x260
[   33.662079]  ? __sock_release+0x260/0x260
[   33.666230]  sock_close+0x19/0x20
[   33.669672]  __fput+0x355/0x8b0
[   33.672943]  ? fput+0x1a0/0x1a0
[   33.676217]  ? _raw_spin_unlock_irq+0x27/0x70
[   33.680703]  ____fput+0x15/0x20
[   33.683977]  task_work_run+0x1ec/0x2a0
[   33.687858]  ? task_work_cancel+0x250/0x250
[   33.692179]  ? exit_to_usermode_loop+0x8c/0x370
[   33.696844]  exit_to_usermode_loop+0x313/0x370
[   33.701421]  ? syscall_slow_exit_work+0x500/0x500
[   33.706273]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.711815]  do_fast_syscall_32+0xcd5/0xfb2
[   33.716140]  ? do_int80_syscall_32+0x890/0x890
[   33.720733]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   33.725479]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.731014]  ? syscall_return_slowpath+0x31d/0x5e0
[   33.735959]  ? sysret32_from_system_call+0x5/0x46
[   33.740814]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.745646]  entry_SYSENTER_compat+0x70/0x7f
[   33.750051] RIP: 0023:0xf7f4fcb9
[   33.753410] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
[   33.773556] RSP: 002b:00000000ffa9b30c EFLAGS: 00000246 ORIG_RAX: 0000000000000006
[   33.781255] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000008150138
[   33.788530] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 00000000ffa9b9c8
[   33.795799] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000
[   33.803058] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   33.810341] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.818409] Dumping ftrace buffer:
[   33.822086]    (ftrace buffer empty)
[   33.825781] Kernel Offset: disabled
[   33.829403] Rebooting in 86400 seconds..